A plasticizer production and processing system

Abstract

The application discloses a plasticizer production and processing system, which comprises a distillation device communicated with a rectifying tower, the distillation device is communicated with an asphalt collecting tank, the rectifying tower is communicated with a three-way heat exchange device, the three-way heat exchange device has a first flow channel, a second flow channel and a third flow channel, the outlet of the first flow channel is respectively communicated with a finished product buffer tank and the distillation device, the inlet and outlet of the second flow channel are respectively communicated with a raw material tank and the distillation device, the inlet and outlet of the third flow channel are respectively communicated with a water storage tank and a heat tracing pipe system, and the outlet of the finished product buffer tank is respectively communicated with a finished product tank and the rectifying tower. The application can effectively remove impurities, heat petroleum raw materials and heat tracing water by using the heat of distillation products, improve the fluidity of petroleum raw materials, reduce the heat loss caused by the entry of petroleum raw materials into the distillation device, supply the heat tracing water to the heat tracing pipe system after absorbing heat, and then improve the temperature of petroleum raw materials in the conveying pipe and improve the conveying efficiency. The application is suitable for the technical field of plasticizer refining.

Description

Technical Field

[0001] This invention belongs to the technical field of plasticizer refining, specifically, it relates to a plasticizer production and processing system. Background Technology

[0002] Aromatic heat transfer oils are widely used as plasticizers due to their good compatibility with rubber, high processing performance, and fast absorption rate. Currently, the main source of aromatic heat transfer oils is petroleum. The general refining method involves distilling repeatedly refined petroleum to extract the aromatic heat transfer oil. This oil is then passed through a distillation column, cooled, and finally collected in a collection tank. However, during distillation, some impurities enter the distillation column. While the column removes most of these impurities, some remain in the finished product, leading to a decrease in quality. Furthermore, the distilled aromatic heat transfer oil carries a significant amount of heat, which is typically removed by a cooler, resulting in energy loss. Especially in cold seasons, due to the poor fluidity of petroleum feedstock at low temperatures, increasing the pump pressure is necessary to ensure a sufficient supply of petroleum feedstock and avoid insufficient flow affecting production efficiency. This increased pump pressure also increases the pressure on the delivery pipelines, potentially leading to pump overload and pipeline rupture. Meanwhile, the low-temperature petroleum feedstock entering the distillation equipment will cause a large amount of heat loss to the equipment. In order to overcome the problems caused by the low-temperature environment, a separate heating system is required to heat the tanks and pipelines for storing petroleum feedstock. This not only increases energy consumption, but also increases the investment cost of the equipment. Summary of the Invention

[0003] This invention provides a plasticizer production and processing system for forcibly removing impurities from petroleum during the distillation process and effectively utilizing the heat carried by the distilled product to heat the petroleum feedstock and the accompanying hot water, thereby improving the fluidity of the petroleum feedstock and reducing heat loss caused by it entering the distillation unit. The accompanying hot water absorbs heat and is then supplied to the heating pipe system, thereby increasing the temperature of the petroleum feedstock in the conveying pipe and improving the conveying efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A plasticizer production and processing system includes a distillation unit whose outlet is connected to the inlet of a distillation column. The asphalt outlet of the distillation unit is connected to an asphalt collection tank. The outlet of the distillation column is connected to a three-way heat exchange device. The three-way heat exchange device has three independent flow channels, namely a first flow channel, a second flow channel, and a third flow channel. The distillation product, raw material, and heat tracing water flow through the corresponding first, second, and third flow channels and through the three-way heat exchange device. The outlet of the first flow channel is connected to a finished product buffer tank and the distillation unit. The inlet and outlet of the second flow channel are connected to a raw material tank and the distillation unit, respectively. The inlet and outlet of the third flow channel are connected to a water storage tank and a heat tracing piping system, respectively. The outlet of the finished product buffer tank is connected to the finished product tank and the distillation column, respectively.

[0006] Furthermore, the distillation apparatus includes a distillation vessel mounted on a support frame, and a partition sleeve extending downward from the upper end of the distillation vessel along its axis is constructed inside the distillation vessel. The partition sleeve has an installation jacket, and an electric heating wire is installed in the installation jacket. The lower end of the partition sleeve communicates with the lower part of the distillation vessel. The partition sleeve divides the inner cavity of the distillation vessel from the inside to the outside into a feed chamber and a distillation chamber. A settling chamber is formed in the lower part of the distillation vessel. A forced filtration feeding mechanism extends into the feed chamber from the upper end of the distillation vessel.

[0007] Furthermore, the distillation chamber includes a primary rising zone, a secondary rising zone, and a steam collecting zone arranged sequentially from bottom to top. A steam exhaust connector is constructed at the upper end of the distillation vessel, which is connected to the steam collecting zone. The diameter of the secondary rising zone gradually expands upward in the vertical direction, while the diameter of the steam collecting zone gradually narrows upward in the vertical direction.

[0008] Furthermore, the forced filtration feeding mechanism includes a filter cylinder coaxially disposed within a partition sleeve. The upper end of the filter cylinder is coaxially fixedly connected to an installation pipe. The upper end of the installation pipe extends out of the distillation vessel and is connected to a transfer pipe. The upper end of the transfer pipe is coaxially connected to the output shaft of a drive motor. An adapter sleeve is rotatably fitted outside the transfer pipe. A guide port is provided on the transfer pipe at a location within the adapter sleeve. A connector pipe is constructed on the transfer pipe. The connector pipe is connected to the guide channel of the transfer pipe through the adapter sleeve and the guide port. A slag discharge pipe is rotatably connected to the lower end of the filter cylinder.

[0009] Furthermore, an upper connecting seat and a lower connecting seat are respectively constructed at the upper and lower ends of the filter cylinder. The lower end of the mounting pipe is constructed on the upper connecting seat, and the upper end of the slag discharge pipe is rotatably connected to the lower connecting seat. Multiple ribs are evenly constructed along the circumference of the inner circumferential wall of the filter cylinder. Each rib extends spirally along the axis of the filter cylinder. Multiple on-off stirring elements are movably connected along the circumference of the outer side of the filter cylinder.

[0010] Furthermore, the peripheral wall of the filter cylinder is composed of multiple alternating arc-shaped plates and arc-shaped filter screens. A baffle is constructed on the outer peripheral surface of the arc-shaped plates, and the baffle extends along the axial direction of the filter cylinder to the upper connecting seat and the lower connecting seat. An annular groove coinciding with the axis of the filter cylinder is constructed at the ends of the upper connecting seat and the lower connecting seat that are close to each other. The on-off stirring component includes an arc-shaped movable plate that fits against the outer wall of the filter cylinder, and the upper and lower ends of the arc-shaped movable plate are respectively assembled in the corresponding annular grooves. A disturbance blade is constructed on the arc-shaped movable plate, or multiple disturbance rods are constructed at intervals along the extension direction of the arc-shaped movable plate.

[0011] Furthermore, the arc-shaped plate, arc-shaped filter, baffle, and arc-shaped movable plate all have the same spiral shape, and the disturbance blade also has the same spiral shape as the arc-shaped movable plate.

[0012] Furthermore, a guide seat is constructed at the lower end of the distillation vessel, and guide holes are uniformly opened along its circumference on the guide seat. A guide sleeve is constructed at the lower end of the guide seat, and a discharge sleeve with a gradually expanding diameter in the vertical direction is constructed at the lower end of the guide sleeve. The discharge sleeve is connected to the asphalt receiving joint at the upper end of the asphalt collection tank. The slag discharge pipe passes through the guide seat, the guide sleeve, the discharge sleeve, and the asphalt collection tank in sequence and is connected to the slag collection tank. A connecting spring is provided inside the guide sleeve, and the two ends of the connecting spring are connected to the guide seat and the valve body, respectively. The valve body and the connecting spring are respectively movably fitted outside the slag discharge pipe.

[0013] Furthermore, the three-way heat exchange device includes a three-way assembly disposed within a cabinet. The first flow channel, the second flow channel, and the third flow channel are formed between the three-way assembly and the cabinet. A first inlet chamber and a first outlet chamber are formed at both ends of the first flow channel within the cabinet. A second inlet chamber and a second outlet chamber are formed at both ends of the second flow channel within the cabinet. A third inlet chamber and a third outlet chamber are formed at both ends of the third flow channel within the cabinet. The first inlet chamber and the first outlet chamber are respectively connected to a first inlet pipe and a first outlet pipe. A first backflushing pipe and a first drain pipe are respectively constructed on the first inlet pipe and the first outlet pipe. The second inlet chamber and the second outlet chamber are respectively connected to the second inlet pipe and the second outlet pipe. A second backflushing pipe and a second drain pipe are respectively constructed on the second inlet pipe and the second outlet pipe. The third inlet chamber and the third outlet chamber are respectively connected to the third inlet pipe and the third outlet pipe.

[0014] Furthermore, the three-way assembly includes multiple hollow conductive elements arranged side by side. These conductive elements are connected by multiple connecting pipes, each connecting pipe passing through each conductive element. The connecting pipes and the inner cavities of each conductive element are mutually isolated. The two ends of the connecting pipes are respectively connected to the third inlet cavity and the third outlet cavity. Moreover, the inner cavities of these connecting pipes form a third flow channel, and the inner cavities of the conductive elements form a second flow channel. The two ends of each conductive cavity are respectively connected to the second inlet cavity and the second outlet cavity. The first flow channel is formed in the space between adjacent conductive elements, and this space is respectively connected to the first inlet cavity and the first outlet cavity.

[0015] The present invention, by employing the aforementioned structure, achieves a technological advancement compared to existing technologies in the following ways: The distillation apparatus of the present invention is used, on the one hand, for distilling petroleum feedstocks; on the other hand, it filters the petroleum feedstocks before distillation, pre-filtering impurities to prevent them from contaminating the distillation product and entering the rectification column. After passing through the rectification column, the distilled product enters a three-way heat exchanger. Since three media flow within the three-way heat exchanger—the distillation product, the petroleum feedstock, and the accompanying hot water—it serves two purposes: firstly, it cools the distillation product; secondly, it simultaneously heats the petroleum feedstock and the accompanying hot water, thereby improving the fluidity of the petroleum feedstock. Furthermore, the preheated petroleum feedstock significantly reduces heat loss to the distillation apparatus. The heated accompanying hot water is pumped into the heat tracing piping system, further heating the delivery pipes. The distilled product exits through a three-way heat exchanger. When the distilled product is qualified, it enters the finished product buffer tank; when the distilled product is unqualified, it enters the distillation apparatus for secondary distillation, thereby ensuring product quality. In summary, this invention can efficiently and forcibly remove impurities from petroleum during the distillation process and effectively utilize the heat carried by the distilled product. This heat is used to heat the petroleum feedstock and the accompanying hot water, improving the fluidity of the petroleum feedstock and reducing the large amount of heat loss caused by it entering the distillation apparatus. Furthermore, the accompanying hot water absorbs heat and is supplied to the heating pipe system, thereby increasing the temperature of the petroleum feedstock in the conveying pipe, reducing its viscosity, and improving the conveying efficiency. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure connecting the distillation apparatus, the asphalt collection tank, and the support frame in an embodiment of the present invention;

[0020] Figure 3 This is an axial structural cross-sectional view of the connection between the distillation apparatus and the asphalt collection tank in an embodiment of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of the structure at part A in the middle;

[0022] Figure 5 for Figure 3 Enlarged view of the structure of part B in the middle;

[0023] Figure 6 This is a partial structural cross-sectional view of the lower part of the distillation apparatus according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the forced filtration feeding mechanism in the distillation apparatus of this invention after the drive motor has been removed;

[0025] Figure 8 for Figure 7 A schematic diagram of the structure after disassembly;

[0026] Figure 9 This is an axial structural cross-sectional view of the filter cylinder in the forced filtration feeding mechanism of this invention embodiment;

[0027] Figure 10 This is a schematic diagram of a forced filtering feeding mechanism in another form after removing the drive motor, according to an embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of the structure of a three-way heat exchange device according to an embodiment of the present invention;

[0029] Figure 12 This is a cross-sectional view of the three-way heat exchange device according to an embodiment of the present invention;

[0030] Figure 13 This is a longitudinal structural cross-sectional view of a three-way heat exchange device according to an embodiment of the present invention;

[0031] Figure 14 This is a schematic diagram of the three-way assembly in the three-way heat exchange device according to an embodiment of the present invention;

[0032] Figure 15 This is a partial structural diagram of the three-way component in the three-way heat exchange device according to an embodiment of the present invention.

[0033] Components labeled: 100-Distillation apparatus, 101-Distillation kettle, 102-Separating sleeve, 103-Electric heating wire, 104-Feed chamber, 105-First-stage rising zone, 106-Settling chamber, 107-Second-stage rising zone, 108-Steam collecting zone, 109-Steam exhaust connector, 110-Conductor seat, 111-Conducting hole, 112-Conducting sleeve, 113-Discharge sleeve, 114-Connecting spring, 115-Valve body, 116-Slag discharge pipe, 117- Filter cartridge, 1171-Arc-shaped filter screen, 1172-Arc-shaped plate, 1173-Baffle bar, 1174-Rib, 1175-Upper connecting seat, 1176-Lower connecting seat, 1177-Annular groove, 1178-Mounting tube, 118-Arc-shaped movable plate, 119-Disturbance rod, 120-Disturbance blade, 121-Adapter pipe, 122-Conducting channel, 123-Conducting port, 124-Adapter sleeve, 125-Connector pipe, 126-Drive motor 200-Asphalt collection tank, 201-Tank body, 202-Asphalt receiving connector, 203-Asphalt discharge connector, 300-Distillation column, 400-Three-way heat exchanger, 401-Conducting component, 402-Second flow channel, 403-Connecting pipe, 404-Third flow channel, 405-First flow channel, 406-First inlet chamber, 407-First discharge chamber, 408-First inlet pipe, 409-First backflushing pipe, 410-First discharge pipe 411-First drain pipe, 412-Second inlet chamber, 413-Second outlet chamber, 414-Second inlet pipe, 415-Second backflushing pipe, 416-Second outlet pipe, 417-Second drain pipe, 418-Third inlet chamber, 419-Third outlet chamber, 420-Third inlet pipe, 421-Third outlet pipe, 500-Finished product buffer tank, 600-Finished product tank, 700-Raw material tank, 800-Water storage tank, 900-Support frame. Detailed Implementation

[0034] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0035] This invention discloses a plasticizer production and processing system, such as Figure 1As shown, the apparatus includes a distillation unit 100, a distillation column 300, an asphalt collection tank 200, a three-way heat exchanger 400, a finished product buffer tank 500, a raw material tank 700, a water storage tank 800, and a finished product tank 600. The outlet of the distillation unit 100 is connected to the inlet of the distillation column 300, the asphalt outlet of the distillation unit 100 is connected to the asphalt collection tank 200, and the outlet of the distillation column 300 is connected to the three-way heat exchanger 400. The three-way heat exchanger 400 has three independent flow channels: a first flow channel 405, a second flow channel 402, and a third flow channel 404. The distillation product, raw material, and accompanying hot water flow through the corresponding first flow channel 405, second flow channel 402, and third flow channel 404, respectively, and pass through the three-way heat exchanger 400. Furthermore, the outlet of the first flow channel 405 is connected to the finished product buffer tank 500 and the distillation apparatus 100, respectively; the inlet of the first flow channel 405 is connected to the outlet of the rectification column 300; the inlet and outlet of the second flow channel 402 are connected to the raw material tank 700 and the distillation apparatus 100, respectively; the inlet and outlet of the third flow channel 404 are connected to the water storage tank 800 and the heat tracing piping system, respectively; and the outlet of the finished product buffer tank 500 is connected to the finished product tank 600 and the rectification column 300, respectively. The working principle and advantages of this invention are as follows: the distillation apparatus 100 of this invention is used, on the one hand, for distilling petroleum raw materials; on the other hand, it filters the petroleum raw materials before distillation, pre-filtering impurities in the petroleum raw materials to prevent impurities from mixing into the distillation product and entering the rectification column 300. After passing through the distillation column 300, the distilled product enters the three-way heat exchange device 400. Since three media flow in the three-way heat exchange device 400, namely the distilled product, petroleum feedstock, and hot water, it serves two purposes: firstly, it cools the distilled product, and secondly, it simultaneously heats the petroleum feedstock and hot water, thereby improving the fluidity of the petroleum feedstock. Furthermore, the preheated petroleum feedstock significantly reduces the heat loss to the distillation device 100. The heated hot water is pumped into the heat tracing piping system, thereby heating the delivery pipe. The distilled product exits through a three-way heat exchanger 400. When the distilled product is qualified, it enters the finished product buffer tank 500; when the distilled product is unqualified, it enters the distillation apparatus 100 for secondary distillation, thereby ensuring product quality. In summary, this invention can efficiently and forcibly remove impurities in petroleum during the distillation process and effectively utilize the heat carried by the distilled product. This heat is used to heat the petroleum feedstock and the accompanying hot water, improving the fluidity of the petroleum feedstock and reducing the large amount of heat loss caused by it entering the distillation apparatus 100. Moreover, the accompanying hot water absorbs heat and is supplied to the heat tracing pipe system, thereby increasing the temperature of the petroleum feedstock in the conveying pipe, reducing its viscosity, and improving the conveying efficiency.

[0036] As a preferred embodiment of the present invention, such as Figure 2 ,3 As shown, the distillation apparatus 100 includes a distillation vessel 101 and a forced filtration feeding mechanism. The distillation vessel 101 is mounted on a support frame 900. A partition sleeve 102 is constructed within the distillation vessel 101, coinciding with the axis of the distillation vessel 101. The partition sleeve 102 extends downwards from the upper end of the distillation vessel 101 along its axis. The partition sleeve 102 has a mounting jacket, within which an electric heating wire 103 is mounted. The lower end of the partition sleeve 102 communicates with the lower part of the distillation vessel 101. In this embodiment, the partition sleeve 102 divides the inner cavity of the distillation vessel 101 from the inside out into a feeding chamber 104 and a distillation chamber. A settling chamber 106 is formed in the lower part of the distillation vessel 101. The forced filtration feeding mechanism extends from the upper end of the distillation vessel 101 into the feeding chamber 104. The working principle and advantages of this embodiment are as follows: the petroleum raw material enters the forced filtration feeding mechanism, and during the rotation of the forced filtration feeding mechanism, the petroleum raw material is centrifuged and enters the feeding chamber 104 through the forced filtration feeding mechanism. Impurities in the petroleum raw material are filtered and retained in the forced filtration feeding mechanism. The petroleum raw material entering the feeding chamber 104 enters the distillation chamber through the lower end of the separator 102, and is gradually heated and distilled during the rising process in the distillation chamber. The distilled product is supplied to the distillation column 300. At the same time, the separated asphalt gradually settles and enters the asphalt collection tank 200 through the lower end of the distillation kettle 101.

[0037] As a preferred embodiment of the present invention, such as Figure 3 As shown, the distillation chamber includes a primary rising zone 105, a secondary rising zone 107, and a steam collecting zone 108 arranged sequentially from bottom to top. A steam venting connector 109 is constructed at the upper end of the distillation vessel 101, communicating with the steam collecting zone 108. The diameter of the secondary rising zone 107 gradually expands vertically upwards, while the diameter of the steam collecting zone 108 gradually narrows vertically upwards. The working principle and advantages of this embodiment are as follows: when the filtered petroleum feedstock enters the primary rising zone 105, it is gradually heated and rises to the secondary rising zone 107, where it is gradually distilled and vaporized. The vaporized product is gradually collected in the steam collecting zone 108 and then supplied to the distillation column 300 via the steam venting connector 109. In this embodiment, because the secondary ascending zone 107 has a gradually expanding diameter along the vertical direction, its upward pressure gradually decreases. This causes the heavier asphalt carried to gradually polymerize within the secondary ascending zone 107. The polymerized asphalt then flows downward along the inner and outer walls of the secondary ascending zone 107, and subsequently enters the settling chamber 106 through the inner and outer walls of the primary ascending zone 105. In this embodiment, because the diameter of the steam collecting zone 108 gradually narrows along the vertical direction, it promotes the gradual accumulation of distilled products at the upper end of the steam collecting zone 108, which are then smoothly discharged through the exhaust connector 109.

[0038] As a preferred embodiment of the present invention, such as Figure 3 , 4 As shown in Figures 7, 8, and 9, the forced filtration feeding mechanism includes a filter cylinder 117 and an installation pipe 1178. The filter cylinder 117 is housed within a partition sleeve 102. The lower end of the installation pipe 1178 is fixedly connected to the upper end of the filter cylinder 117, and the axes of the partition sleeve 102, filter cylinder 117, and installation pipe 1178 coincide. In this embodiment, the upper end of the installation pipe 1178 extends out of the distillation vessel 101 and connects to a transfer pipe 121. The upper end of the transfer pipe 121 is coaxially connected to the output shaft of the drive motor 126. A transition sleeve 124 is rotatably fitted outside the transfer pipe 121. A guide port 123 is provided on the transfer pipe 121 within the transition sleeve 124. A connector pipe 125 is constructed on the transfer pipe 121, which communicates with the guide channel 122 of the transfer pipe 121 through the transition sleeve 124 and the guide port 123. A slag discharge pipe 116 is rotatably connected to the lower end of the filter cylinder 117. The working principle and advantages of this embodiment are as follows: After being pumped, the petroleum raw material in the raw material tank 700 enters the transfer pipe 121 through the adapter sleeve 124, and then enters the filter cylinder 117 through the installation pipe 1178. At the same time, the drive motor 126 drives the installation pipe 1178 to rotate through the transfer pipe 121, thereby causing the filter cylinder 117 connected to the installation pipe 1178 to rotate synchronously. Under the action of centrifugal force, the petroleum raw material entering the filter cylinder 117 is gradually discharged from the filter cylinder 117, and impurities in the petroleum raw material are isolated in the filter cylinder 117. When the amount of impurities in the filter cylinder 117 reaches a certain level, the slag discharge pipe 116 is opened, and the impurities are discharged into the slag collection tank through the slag discharge pipe 116.

[0039] As a preferred embodiment of the present invention, such as Figure 3 , 5As shown in Figure 6, a guide seat 110 is constructed at the lower end of the distillation vessel 101. Guide holes 111 are uniformly formed along the circumference of the guide seat 110. A guide sleeve 112 is constructed at the lower end of the guide seat 110, and a discharge sleeve 113 is constructed at the lower end of the guide sleeve 112. The diameter of the discharge sleeve 113 gradually expands downwards in the vertical direction. The asphalt collection tank 200 of this embodiment includes a tank body 201. An asphalt receiving connector 202 is constructed at the upper end of the tank body 201, and an asphalt discharge connector 203 is constructed at the lower end of the tank body 201. In this embodiment, the discharge sleeve 113 communicates with the asphalt receiving connector 202 at the upper end of the asphalt collection tank 200. A slag discharge pipe 116 passes sequentially through the guide seat 110, the guide sleeve 112, the discharge sleeve 113, and the asphalt collection tank 200. After extending out of the asphalt collection tank 200, the slag discharge pipe 116 communicates with the slag collection tank. In this embodiment, to ensure the smooth and continuous discharge of asphalt accumulated in the settling chamber 106 into the asphalt collection tank 200, the following measures are taken: a connecting spring 114 is installed inside the guide sleeve 112. The two ends of the connecting spring 114 are connected to the guide seat 110 and the valve body 115, respectively. The valve body 115 and the connecting spring 114 are movably fitted outside the slag discharge pipe 116. The working principle and advantages of this embodiment are as follows: the pressure inside the distillation kettle 101 is controlled according to the grade of the petroleum raw material (grades are divided according to the asphalt content; the higher the asphalt content, the lower the grade of the petroleum raw material). Specifically, a pressure boosting joint (not shown in the figure) is constructed at the upper end of the distillation kettle 101 to pressurize the distillation kettle 101. The opening degree of the valve body 115 varies under different pressures; that is, the higher the asphalt content, the larger the opening degree of the valve body 115. The purpose is to prevent excessive accumulation of asphalt in the lower part of the distillation kettle 101, thereby affecting the distillation operation.

[0040] As a preferred embodiment of the present invention, such as Figure 9As shown, an upper connecting seat 1175 and a lower connecting seat 1176 are respectively constructed at the upper and lower ends of the filter cylinder 117. The lower end of the aforementioned mounting pipe 1178 is constructed on the upper connecting seat 1175, and the upper end of the slag discharge pipe 116 is rotatably connected to the lower connecting seat 1176. In this embodiment, multiple ribs 1174 are constructed on the inner peripheral wall of the filter cylinder 117. These ribs 1174 are evenly arranged along the circumference of the filter cylinder 117, and each rib 1174 extends spirally along the axis of the filter cylinder 117. Multiple on-off stirring elements are movably connected to the outside of the filter cylinder 117 along its circumference. In this embodiment, because the ribs 1174 extend spirally along the axis of the filter cylinder 117, after the petroleum feedstock enters the filter cylinder 117, the filter cylinder 117 is driven to rotate, causing impurities to be filtered and retained inside the filter cylinder 117. During the gradual accumulation of impurities, the spiral guidance of the ribs 1174 causes the impurities to gradually move downwards and accumulate in the lower part of the filter cylinder 117, thus preventing impurities from being dispersed on the peripheral wall of the filter cylinder 117 and affecting the filtration of the petroleum feedstock. Moreover, because multiple on-off stirring elements are movably connected to the outside of the filter cylinder 117 along its circumference, when the filter cylinder 117 is driven to rotate rapidly in the forward direction, the on-off stirring elements connect the filter cylinder 117 to the feed chamber 104, so that the petroleum feedstock can smoothly enter the feed chamber 104. At the same time, the on-off stirring elements rotate with the filter cylinder 117, thereby stirring the petroleum feedstock entering the feed chamber 104, so that the petroleum feedstock is heated fully and evenly, avoiding uneven heating in some areas that would affect the distillation effect. When the filter cylinder 117 is driven to move slowly in the opposite direction, the on / off agitator isolates the filter cylinder 117 from the feed chamber 104. At this time, the valve on the slag discharge pipe 116 is opened, and petroleum raw materials or cleaning fluid are injected into the filter cylinder 117 through the connector pipe 125. Under the flushing of the liquid, the impurities accumulated in the filter cylinder 117 are flushed down and then discharged into the slag collection tank through the slag discharge pipe 116.

[0041] As a preferred embodiment of the present invention, such as Figure 7 , 8As shown, the peripheral wall of the filter cylinder 117 is composed of multiple alternating arc-shaped plates 1172 and multiple arc-shaped filter screens 1171. A baffle 1173 is constructed on the outer peripheral surface of the arc-shaped plates 1172. Both ends of the baffle 1173 extend axially along the filter cylinder 117 to the upper connecting seat 1175 and the lower connecting seat 1176. Annular grooves 1177 are respectively constructed at the ends of the upper connecting seat 1175 and the lower connecting seat 1176 that are close to each other. The axes of these two annular grooves 1177 coincide with the axis of the filter cylinder 117. The on / off stirring element of this embodiment includes an arc-shaped movable plate 118, which is attached to the outer wall of the filter cylinder 117. The upper and lower ends of the arc-shaped movable plate 118 are respectively assembled into corresponding annular grooves 1177. In this embodiment, a disturbance blade 120 is constructed on the arc-shaped movable plate 118, or multiple disturbance rods 119 are spaced apart along the extension direction of the arc-shaped movable plate 118. The working principle and advantages of this embodiment are as follows: When the filter cylinder 117 is driven to rotate in the forward direction, under the action of centrifugal force, one end of the arc-shaped movable plate 118 abuts against the corresponding baffle 1173. At this time, the arc-shaped movable plate 118 overlaps with the corresponding arc-shaped plate 1172, thereby completely exposing the arc-shaped filter screen 1171, so that the filter cylinder 117 is in the state of filtering petroleum raw materials. When the filter cylinder 117 is driven to rotate in the reverse direction, under the action of centrifugal force, the other end of the arc-shaped movable plate 118 abuts against the corresponding baffle 1173. At this time, the arc-shaped movable plate 118 overlaps with the corresponding arc-shaped filter screen 1171, achieving the purpose of sealing the filter cylinder 117. In this way, the filter cylinder 117 is isolated from the feed chamber 104, thereby allowing the slag discharge and cleaning operations of the filter cylinder 117. In this embodiment, during the process of the filter cylinder 117 being driven to rotate, the filter cylinder 117 drives the arc-shaped movable plate 118 to rotate, thereby causing the disturbance blades 120 or disturbance rods 119 on the arc-shaped movable plate 118 to stir and disturb the petroleum raw material in the feed chamber 104, so that the petroleum raw material is heated evenly.

[0042] As a preferred embodiment of the present invention, such as Figure 10 As shown, the arc-shaped plate 1172, arc-shaped filter screen 1171, baffle 1173, and arc-shaped movable plate 118 all have the same spiral shape, and the disturbance blade 120 also has the same spiral shape as the arc-shaped movable plate 118. These spiral-shaped components serve two purposes: firstly, they function as the original on / off filter cylinder 117 and provide stirring; secondly, they allow the petroleum feedstock in the feed chamber 104 to smoothly pass through the lower end of the separator sleeve 102 and enter the distillation chamber under spiral feeding.

[0043] As a preferred embodiment of the present invention, such as Figure 11-15As shown, the three-way heat exchange device 400 includes a cabinet and a three-way assembly, wherein the three-way assembly is disposed within the cabinet, and the aforementioned first flow channel 405, second flow channel 402, and third flow channel 404 are all formed between the three-way assembly and the cabinet. In this embodiment, a first inlet cavity 406 and a first outlet cavity 407 are formed at both ends of the first flow channel 405 within the cabinet, a second inlet cavity 412 and a second outlet cavity 413 are formed at both ends of the second flow channel 402 within the cabinet, and a third inlet cavity 418 and a third outlet cavity 419 are formed at both ends of the third flow channel 404 within the cabinet. In this embodiment, the first inlet cavity 406 and the first outlet cavity 407 are respectively connected to a first inlet pipe 408 and a first outlet pipe 410, and a first backflushing pipe 409 and a first drain pipe 411 are respectively constructed on the first inlet pipe 408 and the first outlet pipe 410. The second inlet chamber 412 and the second outlet chamber 413 are respectively connected to the second inlet pipe 414 and the second outlet pipe 416. A second backflushing pipe 415 and a second drain pipe 417 are respectively constructed on the second inlet pipe 414 and the second outlet pipe 416. The third inlet chamber 418 and the third outlet chamber 419 are respectively connected to the third inlet pipe 420 and the third outlet pipe 421. The specific structure of the three-way assembly in this embodiment is as follows: the three-way assembly includes multiple hollow conductive elements 401 arranged side-by-side. These conductive elements 401 are connected by multiple connecting pipes 403. Each connecting pipe 403 passes through each conductive element 401, and the connecting pipe 403 is isolated from the inner cavity of each conductive element 401. The two ends of the connecting pipe 403 are respectively connected to the third inlet chamber 418 and the third outlet chamber 419, and the inner cavities of these connecting pipes 403 constitute a third flow channel 404. In this embodiment, the inner cavity of the conductive member 401 forms a second flow channel 402, and the two ends of each conductive cavity are respectively connected to the second inlet cavity 412 and the second outlet cavity 413. In this embodiment, the first flow channel 405 is formed in the space between adjacent conductive members 401, and this space is connected to the first inlet cavity 406 and the first outlet cavity 407 respectively. In this embodiment, there are two three-way heat exchange devices 400, and these two three-way heat exchange devices 400 are connected in parallel, so that impurity cleaning and maintenance operations can be performed on the three-way heat exchange devices 400 without stopping the machine.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A plasticizer production and processing system, characterized in that: The system includes a distillation unit whose outlet is connected to the inlet of a distillation column; an asphalt outlet of the distillation unit connected to an asphalt collection tank; and an outlet of the distillation column connected to a three-way heat exchanger. The three-way heat exchanger has three independent flow channels, namely the first flow channel, the second flow channel, and the third flow channel. The distillation product, raw material, and heat tracing water flow through the corresponding first, second, and third flow channels and through the three-way heat exchanger. The outlet of the first flow channel is connected to the finished product buffer tank and the distillation unit, the inlet and outlet of the second flow channel are connected to the raw material tank and the distillation unit, and the inlet and outlet of the third flow channel are connected to the water storage tank and the heat tracing piping system, respectively. The outlet of the finished product buffer tank is connected to the finished product tank and the distillation column. The three-way heat exchange device includes a three-way assembly disposed within a cabinet. A first flow channel, a second flow channel, and a third flow channel are formed between the three-way assembly and the cabinet. A first inlet chamber and a first outlet chamber are formed at both ends of the first flow channel within the cabinet. A second inlet chamber and a second outlet chamber are formed at both ends of the second flow channel within the cabinet. A third inlet chamber and a third outlet chamber are formed at both ends of the third flow channel within the cabinet. The first inlet chamber and the first outlet chamber are respectively connected to a first inlet pipe and a first outlet pipe. A first backflushing pipe and a first drain pipe are respectively constructed on the first inlet pipe and the first outlet pipe. The second inlet chamber and the second outlet chamber are respectively connected to the second inlet pipe and the second outlet pipe. A second backflushing pipe and a second drain pipe are respectively constructed on the second inlet pipe and the second outlet pipe. The third inlet chamber and the third outlet chamber are respectively connected to the third inlet pipe and the third outlet pipe. The three-way assembly includes multiple hollow conductive elements arranged side by side. These conductive elements are connected by multiple connecting pipes, each connecting pipe passing through each conductive element. The connecting pipes are isolated from the inner cavities of each conductive element. The two ends of the connecting pipes are respectively connected to a third inlet cavity and a third outlet cavity. Moreover, the inner cavities of these connecting pipes form a third flow channel, and the inner cavities of the conductive elements form a second flow channel. The two ends of each conductive cavity are respectively connected to a second inlet cavity and a second outlet cavity. A first flow channel is formed in the space between adjacent conductive elements, and this space is respectively connected to a first inlet cavity and a first outlet cavity. The distillation apparatus includes a distillation vessel mounted on a support frame. A partition sleeve extending downward from the upper end of the distillation vessel along its axis is constructed inside the distillation vessel. The partition sleeve has an installation jacket, and an electric heating wire is installed in the installation jacket. The lower end of the partition sleeve communicates with the lower part of the distillation vessel. The partition sleeve divides the inner cavity of the distillation vessel into a feed chamber and a distillation chamber from the inside out. A settling chamber is formed in the lower part of the distillation vessel. A forced filtration feed mechanism extends into the feed chamber from the upper end of the distillation vessel. The forced filtration feeding mechanism includes a filter cylinder coaxially disposed within a partition sleeve. The upper end of the filter cylinder is coaxially fixedly connected to an installation pipe. The upper end of the installation pipe extends out of the distillation vessel and is connected to a transfer pipe. The upper end of the transfer pipe is coaxially connected to the output shaft of a drive motor. An adapter sleeve is rotatably fitted outside the transfer pipe. A guide port is provided on the transfer pipe at a location within the adapter sleeve. A connector pipe is constructed on the transfer pipe. The connector pipe is connected to the guide channel of the transfer pipe through the adapter sleeve and the guide port. A slag discharge pipe is rotatably connected to the lower end of the filter cylinder.

2. The plasticizer production and processing system according to claim 1, characterized in that: The distillation chamber includes a primary rising zone, a secondary rising zone, and a steam collecting zone arranged sequentially from bottom to top. A steam exhaust connector is constructed at the upper end of the distillation vessel, which is connected to the steam collecting zone. The diameter of the secondary rising zone gradually expands upward in the vertical direction, while the diameter of the steam collecting zone gradually narrows upward in the vertical direction.

3. The plasticizer production and processing system according to claim 1, characterized in that: An upper connecting seat and a lower connecting seat are respectively constructed at the upper and lower ends of the filter cylinder. The lower end of the mounting pipe is constructed on the upper connecting seat, and the upper end of the slag discharge pipe is rotatably connected to the lower connecting seat. Multiple ribs are evenly constructed along the circumference of the inner circumferential wall of the filter cylinder. Each rib extends spirally along the axis of the filter cylinder. Multiple on-off stirring elements are movably connected along the circumference of the outer side of the filter cylinder.

4. The plasticizer production and processing system according to claim 3, characterized in that: The peripheral wall of the filter cylinder is composed of multiple alternating arc-shaped plates and arc-shaped filter screens. Baffles are constructed on the outer peripheral surface of the arc-shaped plates, and the baffles extend along the axial direction of the filter cylinder to the upper connecting seat and the lower connecting seat. Annular grooves coinciding with the axis of the filter cylinder are respectively constructed at the ends of the upper and lower connecting seats that are close to each other. The on-off stirring component includes an arc-shaped movable plate that fits against the outer wall of the filter cylinder, and the upper and lower ends of the arc-shaped movable plate are respectively assembled in corresponding annular grooves. Disturbance blades are constructed on the arc-shaped movable plate.

5. A plasticizer production and processing system according to claim 3, characterized in that: The peripheral wall of the filter cylinder is composed of multiple alternating arc-shaped plates and arc-shaped filter screens. A baffle is constructed on the outer peripheral surface of the arc-shaped plates, and the baffle extends along the axial direction of the filter cylinder to the upper connecting seat and the lower connecting seat. Annular grooves coinciding with the axis of the filter cylinder are respectively constructed at the ends of the upper connecting seat and the lower connecting seat that are close to each other. The on-off stirring component includes an arc-shaped movable plate that fits against the outer wall of the filter cylinder, and the upper and lower ends of the arc-shaped movable plate are respectively assembled in the corresponding annular grooves. Multiple disturbance rods are constructed at intervals along the extension direction of the arc-shaped movable plate.

6. The plasticizer production and processing system according to claim 4, characterized in that: The arc-shaped plate, arc-shaped filter, baffle, and arc-shaped movable plate all have the same spiral shape, and the disturbance blade also has the same spiral shape as the arc-shaped movable plate.

7. The plasticizer production and processing system according to claim 1, characterized in that: A guide seat is constructed at the lower end of the distillation vessel, and guide holes are uniformly opened along its circumference on the guide seat. A guide sleeve is constructed at the lower end of the guide seat, and a discharge sleeve with a gradually expanding diameter in the vertical direction is constructed at the lower end of the guide sleeve. The discharge sleeve is connected to the asphalt receiving joint at the upper end of the asphalt collection tank. The slag discharge pipe passes through the guide seat, the guide sleeve, the discharge sleeve and the asphalt collection tank in sequence and is connected to the slag collection tank. A connecting spring is provided inside the guide sleeve, and the two ends of the connecting spring are connected to the guide seat and the valve body respectively. The valve body and the connecting spring are respectively movably fitted outside the slag discharge pipe.

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